Keyframe hotkeys
Set Key on full transform	S
Set Key on Position	Shift + W
Set Key on Rotation	Shift + E
Set Key on Scale	Shift + R
Edit tangents (Force locked or broken)	Shift/Ctrl
Delete key	Delete
Cut selected keys	Ctrl + X
Copy selected keys	Ctrl + C
Paste selected keys	Ctrl + V

Navigation hotkeys
Frame all	A - In cases where no keys are selected, use F to frame all
Frame selected keys/tracks	F
Scrub timeline	K + drag
Move playhead to key time	K + click
Zoom in the timeline	Alt + right-click
Pan in the timeline	Alt + middle-click

Timeline hotkeys
Play/stop animation	Spacebar
Previous Key	, (Comma)
Next Key	. (Period)
Previous Frame	Alt + ,
Next Frame	Alt + .